Good idea, a cheap and easy solution is a program called backup-manager on debian.

To install it :

Code:

apt-get install backup-manager

When done you should edit the file /etc/backup-manager.conf to suit your needs (take your time). You will have to choose what you want to export, how you want to export your backups (ftp is the easiest way).

An easy way to make the backup of the important folders is to have the export directories lines like this :